Code Collapse/Expand for Custom Code box

Would love to see the ability to collapse sections (similar to most code editor apps) and expand them so that we can more easily edit code in Custom Code boxes when it's a huge amount of code. Just the typical plus + and minus - next to the lines that we can click to collapse sections would be great!

Thank you for the suggestion, Jo! This shouldn't be too difficult. We will investigate adding it in one of our next minor releases.

Thanks much Martin!